Bill,
I just tried this and I see the TFR over MVY. I am aware of a sporadic issue with TFRs not showing correctly, you may have run into this; we are still trying to pin down the exact cause. Try downloading the TFR update again and see if it shows up.
If you can spare a few minute, and if you are familiar with reading SD cards on your computer, you might be able to help: Before you do another update, if you can e-mail me two files from your SD card, they are "\Data\tfrs.xml" and "\Data\tfrs.xml.bin", it would help me diagnose this issue. If you cannot do that, I understand. I am committed to getting this fixed in our upcoming version 4 release.
Now, even when fixed, you should always contact official FAA services for the latest TFR information.
Thanks,
Walter